概述
Tinel Alloy A is a nickel-base anti-galling cast alloy built for unlubricated metal-on-metal contact. Its 4% bismuth and 4% tin additions precipitate as self-lubricating phases inside a nickel-chromium-molybdenum matrix (Cr 12.5, Mo 3.0, Fe 5.0, Mn 0.8), so sliding pairs that would seize or gall in 304/316 stainless steel run freely — galling occurs at roughly one-fifth the rate of 316 stainless steel. Because no lubricant is required, there is no risk of product contamination, and because galling folds never form, there are no crevices to harbour bacteria: this is why the alloy family is standard for rotary pump rotors, bushings, wear rings and valve trim in food, dairy and pharmaceutical plants, and why its chromium and molybdenum content — corrosion resistance broadly comparable to austenitic stainless against CIP cleaning chemicals — matters in daily wash-down service (nitric acid excluded). Tinel Alloy A is chemically aligned with ASTM A494 Grade CY5SnBiM / UNS N26055, the grade traded as Waukesha Metal 88 or Alloy 88, with iron and trace limits to the customer's specification. It must be used in the as-cast condition: it cannot be welded or repaired by welding, is not heat treatable, and is limited to roughly 260°C service with properties that degrade at and below freezing. Shanghai Vertex Alloy Co., Ltd supplies Tinel Alloy A cast round bar (typically 20–250 mm) and near-net-shape castings to drawing in the as-cast condition, with EN 10204 3.1 mill certificates, gall-testing data on request, certification to ASTM A494 CY5SnBiM where required, and flexible MOQ. Contact Shanghai Vertex Alloy Co., Ltd for latest stock, sizes and pricing.
尺寸范围
- Diameter Range: 20–250 mm (typical cast bar)
牌号标准
| 标准体系 | 数值 |
|---|---|
| Tinel Alloy A | - |
化学成分
| 元素 | 数值 |
|---|---|
| Nickel (Ni) | Balance |
| Chromium (Cr) | 12.5 |
| Iron (Fe) | 5.0 |
| Bismuth (Bi) | 4.0 |
| Tin (Sn) | 4.0 |
| Molybdenum (Mo) | 3.0 |
| Manganese (Mn) | 0.8 |
| Carbon (C) | ≤ 0.05 |
| Silicon (Si) | ≤ 0.5 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.025 |
机械性能
| 性能 | 数值 |
|---|---|
| Tensile Strength | ≈ 330–480 MPa (48–70 ksi) |
| Yield Strength | ≈ 260 MPa (38 ksi) |
| Elongation | ≥ 30% (cast condition) |
| Hardness | 121–170 HB (149 HB typical) |
| Elastic Modulus | 186 GPa (27.0 × 10⁶ psi) |
| Galling Performance | Galls at roughly 1/5 the rate of 316 stainless steel |
物理性能
| 性能 | 单位 | 数值 |
|---|---|---|
| Density | - | 8.6 g/cm³ (0.31 lb/in³) |
| Coefficient of Thermal Expansion | - | 8.0 × 10⁻⁶ in/in·°F (0–260°C) — similar to 304 stainless steel |
| Thermal Conductivity | - | Low — 16.7 BTU·in/(hr·ft²·°F) at 105°F, valued in temperature-sensitive areas |
| Electrical Resistivity | - | 112.7 µΩ·cm at 77°F |
| Magnetic Permeability | - | ≈ 10⁻⁴ H/m — essentially non-magnetic |
| Machinability | - | Comparable to 304 stainless steel |
应用场景
- Food & Beverage: Rotary lobe and positive displacement pump rotors;Unlubricated bushings, wear rings, pump covers
- Dairy:Components for CIP-cleaned process lines
- Pharmaceutical:Hygienic pump and valve internals
- Valves: Seats, stems and trim requiring anti-seize behaviour
- Polymer Processing:Low-temperature anti-galling screws and dies
- General Industry:Close-tolerance metal-on-metal sliding pairs without lubrication